Circuit and method for improving stability of current source

The embodiment of the invention discloses a circuit and method for improving the stability of a current source. The circuit comprises a first operational amplifier, a first composite operational amplifier, a second composite operational amplifier and a sampling resistor, the input end of the first operational amplifier is connected with one end of the first composite operational amplifier and oneend of the second composite operational amplifier, the output end of the first operational amplifier is connected with the other end of the first composite operational amplifier and one end of the sampling resistor; and the other end of the sampling resistor is connected with the other end of the second composite operational amplifier. 本发明实施例公开了一种提升电流源稳定性的电路及方法，所述电路包括：第一运算放大器、第一复合运算放大器、第二复合运算放大器和采样电阻；所述第一运算放大器的输入端分别与所述第一复合运算放大器的一端和所述第二复合运算放大器的一端连接；所述第一运算放大器的输出端分别与所述第一复合运算放大器的另一端和所述采样电阻的一端连接；所述采样电阻的另一端与所述第二复合运算放大器的另一端连接。